package com.hr.hrto.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.IdWorker;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.hr.hrto.common.BaseContext;
import com.hr.hrto.common.CustomException;
import com.hr.hrto.domain.*;
import com.hr.hrto.mapper.OrderDetailMapper;
import com.hr.hrto.mapper.OrderMapper;
import com.hr.hrto.service.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;

/**
 * Created with IntelliJ IDEA.
 *
 * @Author: 黄瑞
 * @Date: 2022/07/14/15:52
 * @Description:
 * @version:1.0
 */
@Service
public class OrderServiceImpl extends ServiceImpl<OrderMapper, Orders> implements OrderService {
    @Autowired
    private ShoppingCartService shoppingCartService;
    @Autowired
    private OrderDertailService orderDertailService;
    @Autowired
    private UserService userService;
    @Autowired
    private AddressBookService addressBookService;
    @Override
    @Transactional
    public void submit(Orders orders) {
        //获取用户id
        Long userId = BaseContext.getCurrentId();

        //查询购物车明细
        LambdaQueryWrapper<ShoppingCart> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(ShoppingCart::getUserId,userId);
        List<ShoppingCart> shoppingCarts = shoppingCartService.list(queryWrapper);
        if (shoppingCarts==null||shoppingCarts.size()==0){
            throw new CustomException("购物车为空，请添加后再下单");
        }
        //查询用户数据
        User user = userService.getById(userId);
        //查询用户地址数据
        Long addressBookId = orders.getAddressBookId();
        AddressBook addressBook = addressBookService.getById(addressBookId);
        if (addressBook==null){
            throw new CustomException("请选择地址");
        }
        long orderId = IdWorker.getId();//订单号

        AtomicInteger amount = new AtomicInteger(0);

        List<OrderDetail> orderDetails = shoppingCarts.stream().map((item) -> {
            OrderDetail orderDetail = new OrderDetail();
            orderDetail.setOrderId(orderId);
            orderDetail.setNumber(item.getNumber());
            orderDetail.setDishFlavor(item.getDishFlavor());
            orderDetail.setDishId(item.getDishId());
            orderDetail.setSetmealId(item.getSetmealId());
            orderDetail.setName(item.getName());
            orderDetail.setImage(item.getImage());
            orderDetail.setAmount(item.getAmount());
            amount.addAndGet(item.getAmount().multiply(new BigDecimal(item.getNumber())).intValue());
            return orderDetail;
        }).collect(Collectors.toList());

        orders.setNumber(String.valueOf(orderId));
        orders.setId(orderId);
        orders.setOrderTime(LocalDateTime.now());
        orders.setCheckoutTime(LocalDateTime.now());
        orders.setStatus(2);
        orders.setAmount(new BigDecimal(amount.get()));//总金额
        orders.setUserId(userId);
        orders.setNumber(String.valueOf(orderId));
        orders.setUserName(user.getName());
        orders.setConsignee(addressBook.getConsignee());
        orders.setPhone(addressBook.getPhone());
        orders.setAddress((addressBook.getProvinceName() == null ? "" : addressBook.getProvinceName())
                + (addressBook.getCityName() == null ? "" : addressBook.getCityName())
                + (addressBook.getDistrictName() == null ? "" : addressBook.getDistrictName())
                + (addressBook.getDetail() == null ? "" : addressBook.getDetail()));
        //向订单表插入一条数据

        this.save(orders);
        //向订单明细表插入多个数据
        orderDertailService.saveBatch(orderDetails);
        //删除购物车数据
        shoppingCartService.remove(queryWrapper);
    }
}